I can use scientific notation to write very large or very small numbers. 

I can convert numbers written in scientific notation to standard form.

Scientific notation is a way to write very large numbers or very small numbers. Scientists use scientific notation as a more efficient and convenient way of writing such numbers.

A number in scientific notation is the product of two factors.

The first factor must be greater than or equal to 1 and less than 10.

The second factor is a power of 10.

Very large number example: 65,000,000 → 6.5 × 10^7

[Callouts: Place the decimal point after the first nonzero digit. Count the number of digits after the decimal point. The exponent is positive.]

Very small number example: 0.0000987 → 9.87 × 10^(-5)

[Callouts: Place the decimal point after the first nonzero digit. Count the number of digits before the decimal point. The exponent is negative.]

To write a number in scientific notation in standard form, multiply the decimal number by the power of 10.